Beam body lifting device for bridge construction

Abstract

The utility model discloses a beam body lifting device for bridge construction, relates to the technical field of bridge construction, and solves the technical problems that the existing technical scheme cannot automatically balance a counterweight and cannot move after lifting materials, the beam body lifting device comprises a main base, and a fixed seat is fixedly mounted on the upper wall surface of the main base; the device comprises a fixed base, a rotating table is rotatably installed on the fixed base, a pair of stand columns is fixedly installed on the upper wall face of the rotating table, and a chain wheel frame is fixedly installed between the pair of stand columns. The instability problem caused by center-of-gravity shift in the lifting process of equipment is effectively reduced, and the safety and stability in the lifting process are improved; the operation precision of the whole lifting device is greatly improved, and the movement stability and the track precision in the lifting process are ensured through the application of the guide rail and the lifting sliding block; in the lifting process, stress can be effectively dispersed, equipment bearing stress is reduced, and the service life of equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge construction technical field, concretely is a beam body hoisting device for bridge construction. BACKGROUND

[0002] The utility model relates to the technical field, in bridge construction, beam body hoisting device is a key equipment, is exclusively used for lifting the beam body or component in bridge to the predetermined position. Its main function includes providing reliable power to accurately lift the precast beam to the installation height, and the accurate positioning of beam body is realized with the help of mechanical control or automation system, ensures the stability and alignment accuracy in the construction process. At the same time, beam body hoisting device has diversified functions, in addition to lifting, can also undertake transportation, rotation and temporary support and other tasks, greatly improve the flexibility of construction. In addition, modern device combines automation and remote control technology, makes operation more efficient, safe, and the mechanism of equipped emergency brake and overload protection further guarantees the safety of construction personnel and equipment.

[0003] The application of beam body hoisting device is far-reaching, not only significantly shortens the construction period, improves the efficiency, more ensures the quality and safety of bridge construction. Its precise operation effectively avoids manual operation error, is applicable to complex construction environment such as high pier, high altitude, large span, fully demonstrates the advantage of modern technology. In addition, it promotes the development of bridge construction to standardization and high efficiency, is the landmark achievement of bridge construction technology modernization. Although the equipment cost is higher, but through shortening the construction period, reducing labor cost and reducing quality problems, realizes all-round saving in the long run. Overall, the wide application of beam body hoisting device significantly improves the efficiency, reliability and economy of bridge construction, has become an important tool indispensable in modern bridge construction.

[0004] The existing technical scheme has the technical problems of not being able to automatically balance the counterweight and move after lifting the material. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a beam body hoisting device for bridge construction, which solves the technical problems of the existing technical scheme that cannot automatically balance the counterweight and move after lifting the material.

[0006] To achieve the above object, the utility model is realized by the following technical scheme: a beam body hoisting device for bridge construction, comprising a main base, a fixed seat is fixedly installed on the upper wall surface of the main base, a rotating table is rotatably installed on the fixed seat, a pair of vertical columns are fixedly installed on the upper wall surface of the rotating table, a chain wheel frame is fixedly installed between the pair of vertical columns, a chain transmission structure is arranged on the chain wheel frame, a lifting structure is installed on the chain transmission structure, and a symmetrical counterweight structure is installed at the other end of the chain transmission structure.

[0007] Preferably, the chain transmission structure comprises a driving sprocket and a driven sprocket, the driving sprocket and the driven sprocket are rotatably installed on the sprocket frame, a sprocket motor is fixedly installed on the sprocket frame, the driving end of the sprocket motor is fixedly installed on one end of the driving sprocket, and the driving sprocket and the driven sprocket are meshingly connected with a transmission chain.

[0008] Preferably, a pair of guide rails are fixedly installed on the pair of columns, and the pair of guide rails are respectively fixedly installed on the upper and lower sides of the transmission chain.

[0009] Preferably, a lifting slider is fixedly installed on the lifting structure, the lifting slider is slidingly installed on one of the pair of guide rails, a hoisting frame is fixedly installed on the lower end of the lifting slider, a winch is installed on the hoisting frame, a guide pulley is installed on the hoisting frame, a traction rope is connected to the driving end of the winch, a hoisting platform is connected to the traction rope through the guide pulley, and a hoisting hook is fixedly installed on the lower wall surface of the hoisting platform.

[0010] Preferably, the symmetrical counterweight structure comprises a counterweight slider, the counterweight slider is slidingly installed on one of the pair of guide rails, and a symmetrical counterweight is fixedly installed on the counterweight slider.

[0011] Preferably, a steering motor is fixedly installed in the fixing seat, and the driving end of the steering motor is fixedly installed on the lower wall surface of the rotating table.

[0012] Beneficial effects

[0013] The beam lifting device for bridge construction provided by the utility model can realize automatic counterweight balance according to the weight of the beam body, effectively reduces the instability problem caused by the deviation of the gravity center during the lifting process of the device, and improves the safety and stability of the lifting process; the running precision of the whole lifting device is greatly improved through the chain transmission structure and the driving of the sprocket motor. Meanwhile, the application of the guide rail and the lifting slider ensures the stability and trajectory accuracy of the movement during the lifting process; the design of the winch, the traction rope and the hoisting pulley can effectively disperse the stress during the lifting process, reduce the bearing stress of the device, and prolong the service life of the device. Meanwhile, the hoisting platform is provided with a hoisting hook and other accessories, so that the beam body can be reliably hoisted. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a front view of the cross-sectional structure of the beam lifting device for bridge construction.

[0015] In the figure: 1, main base; 2, fixed seat; 3, rotating table; 4, stand; 5, chain wheel frame; 6, driving sprocket; 7, driven sprocket; 8, sprocket motor; 9, transmission chain; 10, guide rail; 11, lifting slider; 12, hoisting frame; 13, winch; 14, guide pulley; 15, traction rope; 16, hoisting platform; 17, hoisting hook; 18, counterweight slider; 19, symmetrical counterweight; 20, steering motor; DETAILED DESCRIPTION

[0016] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. The detailed description is as follows.

[0017] Please refer to Figure 1 The utility model provides a kind of technical scheme: a beam body lifting device for bridge construction, including main base 1, the fixed seat 2 is fixedly installed on the upper wall surface of main base 1, rotating table 3 is rotatably installed on the fixed seat 2, a pair of stand 4 is fixedly installed on the upper wall surface of rotating table 3, a pair of chain wheel frame 5 is fixedly installed between a pair of stand 4, chain transmission structure is provided on the chain wheel frame 5, lifting structure is installed on the chain transmission structure, symmetrical counterweight 19 structure is installed on the other end of chain transmission structure.

[0018] The embodiment is further provided, and the chain transmission structure includes driving sprocket 6 and driven sprocket 7, the driving sprocket 6 and the driven sprocket 7 are rotatably installed on the chain wheel frame 5, the chain wheel motor 8 is fixedly installed on the chain wheel frame 5, the driving end of the chain wheel motor 8 is fixedly installed on one end of the driving sprocket 6, and the driving sprocket 6 and the driven sprocket 7 are engaged with transmission chain 9.

[0019] The embodiment is further provided, and a pair of guide rails 10 are fixedly installed on a pair of stand 4, and a pair of guide rails 10 are fixedly installed on the upper and lower sides of transmission chain 9 respectively.

[0020] The embodiment is further provided, and lifting slider 11 is fixedly installed on the lifting structure, lifting slider 11 is slidably installed on one of a pair of guide rails 10, hoisting frame 12 is fixedly installed on the lower end of lifting slider 11, winch 13 is installed on hoisting frame 12, guide pulley 14 is installed on hoisting frame 12, traction rope 15 is connected to hoisting platform 16 by passing through guide pulley 14, and hoisting hook 17 is fixedly installed on the lower wall surface of hoisting platform 16.

[0021] The embodiment is further provided with the symmetric counterweight 19 structure, which comprises a counterweight sliding block 18 slidingly installed on one of the pair of guide rails 10, and the symmetric counterweight 19 is fixedly installed on the counterweight sliding block 18.

[0022] The embodiment is further provided with a steering motor 20 fixedly installed in the fixed seat 2, and a driving end of the steering motor 20 is fixedly installed on the lower wall surface of the rotating table 3.

[0023] The detailed connection means is a technology known in the art. Figure 1 As shown, according to the requirements of the construction site, the main base 1 is placed and fixed at the designated position to ensure the stability of the device; the assembly of the equipment is completed by connecting the steering motor 20, the chain wheel motor 8 and other functional components; whether the installation of the fixed seat 2, the rotating table 3, the stand 4, the chain wheel frame 5, the chain transmission structure and the lifting sliding block 11 is firm, and whether the installation of the guide rail 10 is straight is checked.

[0024] The steering motor 20, the chain wheel motor 8 and the hoist 13 are started, the chain transmission mechanism and the traction rope 15 are operated, and whether smooth movement can be achieved is tested; it is confirmed that the chain transmission structure and the symmetric counterweight 19 structure can work normally, and whether the counterweight sliding block 18 slides smoothly and the center of gravity is accurately balanced is checked.

[0025] According to the construction scheme, the beam body or member to be lifted is transported to the vicinity of the lifting area of the lifting device; anchor points or lifting holes are arranged on the beam body to facilitate fixed connection with the lifting hooks 17 of the lifting device; the lifting hooks 17 are connected to the lifting platform 16 through the traction rope 15 to ensure that the lifting frame 12 is firmly connected with the beam body and avoids loosening or falling off. The running state of the lifting pulley and the guide rail 10 is checked to ensure that the traction rope 15 is unobstructed after winding around the pulley.

[0026] The chain wheel motor 8 is started to drive the driving chain wheel 6 and the transmission chain 9 to move the lifting sliding block 11 upward along the guide rail 10.

[0027] During the lifting process, the counterweight sliding block 18 of the symmetric counterweight 19 structure slides synchronously along the guide rail 10 on the other side to automatically adjust the center of gravity of the equipment and maintain the balance of the entire device.

[0028] During the lifting process, the operation of the chain wheel motor 8, the guide pulley 14 and the guide rail 10 is dynamically monitored by using the on-site control system to ensure that the beam body rises along the specified trajectory without deviation or shaking. After the lifting is completed, the steering motor 20 is started to drive the rotating table 3 to rotate to adjust the horizontal position of the beam body on the main base 1 to meet the subsequent construction requirements. If it is necessary to move the beam body to different construction areas, the main base 1 or the lifting device can be moved by using other carrying equipment or auxiliary facilities.

[0029] After lifting the beam body to the design height, the beam body is positioned at the design position by using the precise control of the guide pulley 14 and the chain transmission structure. During the lifting process, the rotating table 3 and the traction rope 15 of the lifting device are slightly adjusted to ensure the installation accuracy of the beam body. The beam body is fixedly connected with the pier or the support component, the fixed position and force of the connecting piece are checked, and the stability of the beam body is ensured.

[0030] The traction rope 15 is relaxed, the lifting hook 17 is disconnected from the beam body, and the lifting slider 11 is restored to the initial position. If the device needs to be repeatedly used in other construction areas, the main base 1 can be disassembled or moved, and then the device can be used after being reinstalled and debugged.

[0031] The wear conditions of key mechanical components such as the chain wheel, the guide rail and the chain are checked, and necessary lubrication and maintenance are performed to ensure the long-term working performance of the equipment. For high-altitude, large-span or irregular terrain construction, the height of the stand 4 and the lifting height are adjusted to expand the application range of the equipment. The counterweight parameters are adjusted according to the weight of the beam body, and the speed of the chain transmission and the load capacity of the lifting frame 12 are adjusted to adapt to components of different sizes and weights.

[0032] It should be noted that the relational terms herein such as first and second and the like are used only to differentiate one entity or operation from another, and do not necessarily require or imply that any such actual relationship or order exists between or among the entities or operations.

[0033] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed as above with reference to the preferred embodiment, it is not intended to limit the present application, and any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, change, equivalent change and modification of the above embodiments, which does not depart from the technical solution of the present application, is still within the scope of the technical solution of the present application.

Claims

1. A beam lifting device for bridge construction, comprising a main base (1), characterized in that, A fixed seat (2) is fixedly installed on the upper wall of the main base (1). A rotating platform (3) is rotatably installed on the fixed seat (2). A pair of columns (4) are fixedly installed on the upper wall of the rotating platform (3). A sprocket frame (5) is fixedly installed between the pair of columns (4). A chain drive structure is provided on the sprocket frame (5). A lifting structure is installed on the chain drive structure. A symmetrical counterweight (19) structure is installed at the other end of the chain drive structure.

2. A beam lifting device for bridge construction according to claim 1, characterized in that... The chain drive structure includes a driving sprocket (6) and a driven sprocket (7). The driving sprocket (6) and the driven sprocket (7) are rotatably mounted on the sprocket frame (5). A sprocket motor (8) is fixedly mounted on the sprocket frame (5). The driving end of the sprocket motor (8) is fixedly mounted on one end of the driving sprocket (6). A transmission chain (9) is meshed with the driving sprocket (6) and the driven sprocket (7).

3. A beam lifting device for bridge construction according to claim 2, characterized in that... A pair of guide rails (10) are fixedly installed on a pair of columns (4), and the pair of guide rails (10) are respectively fixedly installed on the upper and lower sides of the transmission chain (9).

4. A beam lifting device for bridge construction according to claim 3, characterized in that... A lifting slider (11) is fixedly installed on the lifting structure. The lifting slider (11) is slidably installed on one of the pair of guide rails (10). A hoisting frame (12) is fixedly installed at the lower end of the lifting slider (11). A winch (13) is installed on the hoisting frame (12). A guide pulley (14) is installed on the hoisting frame (12). A traction rope (15) is connected to the drive end of the winch (13). The traction rope (15) passes around the guide pulley (14) and is connected to a hoisting platform (16). A hoisting hook (17) is fixedly installed on the lower wall of the hoisting platform (16).

5. A beam lifting device for bridge construction according to claim 3, characterized in that... The symmetrical counterweight (19) structure includes a counterweight slider (18), which is slidably mounted on one of the pair of guide rails (10), and the symmetrical counterweight (19) is fixedly mounted on the counterweight slider (18).

6. A beam lifting device for bridge construction according to claim 1, characterized in that... A steering motor (20) is fixedly installed inside the fixed base (2), and the driving end of the steering motor (20) is fixedly installed on the lower wall of the rotating table (3).

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